In the box are the names of some forces that can provide a centripetal force - Edexcel - GCSE Physics - Question 3 - 2016 - Paper 1
Question 3
In the box are the names of some forces that can provide a centripetal force.
friction
gravity
magnetism
reaction
tension
Choose words from the box to complete eac... show full transcript
Worked Solution & Example Answer:In the box are the names of some forces that can provide a centripetal force - Edexcel - GCSE Physics - Question 3 - 2016 - Paper 1
Step 1
(i) When a satellite orbits the Earth the centripetal force is provided by
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gravity.
Step 2
(ii) When a motorbike goes around a flat circular track the centripetal force is provided by
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Answer
friction.
Step 3
(i) Complete the graph by plotting the other two points.
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The additional points to plot are (3.00, 6.0) and (4.00, 6.9). Ensure that they fit within the scale of the graph, with one square equal to one unit.
Step 4
(ii) Draw a curve of best fit.
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Plot a smooth, continuous curve that passes through as many points as possible without sharp angles, including the origin.
Step 5
(iii) Use your graph to estimate the speed of the ball when the force is 6 N.
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From the graph, estimate the speed to be between 7.2 m/s and 8.2 m/s when the force applied is 6 N.
Step 6
(iv) Use the graph to describe how the speed varies with the force on the ball.
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As the force increases, the speed of the ball also increases, but the relationship is not proportional. Speed increases faster for lower forces and more slowly as the force becomes larger.
